Toyota Tundra. Manual — part 1319

2 Sensor 2)



HO2 sensor
heater (for
sensor 2)



Integration relay
(EFI)



ECM

P0101

Mass Air Flow
Circuit
Range/Performance
Problem



Mass Air Flow
(MAF) meter



Air induction
system



PCV hose
connections

Comes on

DTC stored

-

P0102

Mass or Volume Air
Flow Circuit Low
Input



Open or short in
MAF meter
circuit



MAF meter



ECM

Comes on

DTC stored

Applies

P0103

Mass or Volume Air
Flow Circuit High
Input



Open or short in
MAF meter
circuit



MAF meter



ECM

Comes on

DTC stored

Applies

P0110

Intake Air
Temperature Circuit
Malfunction



Open or short in
IAT sensor
circuit



IAT sensor
(built into MAF
meter)



ECM

Comes on

DTC stored

Applies

P0111

Intake Air
Temperature Sensor
Gradient Too High



Mass air flow
meter assembly

Comes on

DTC stored

-

P0112

Intake Air
Temperature Circuit
Low Input



Open or short in
IAT sensor
circuit



IAT sensor
(built into MAF
meter)



ECM

Comes on

DTC stored

Applies

P0113

Intake Air
Temperature Circuit
High Input



Open or short in
IAT sensor

Comes on

DTC stored

Applies

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra

circuit



IAT sensor
(built into MAF
meter)



ECM

P0115

Engine Coolant
Temperature Circuit
Malfunction



Open or short in
ECT sensor
circuit



ECT sensor



ECM

Comes on

DTC stored

Applies

P0116

Engine Coolant
Temperature Circuit
Range/Performance
Problem



Thermostat



ECT sensor

Comes on

DTC stored

Applies

P0117

Engine Coolant
Temperature Circuit
Low Input



Short in ECT
sensor



ECT sensor



ECM

Comes on

DTC stored

Applies

P0118

Engine Coolant
Temperature Circuit
High Input

Open in ECT sensor
circuit ECT sensor
ECM

Comes on

DTC stored

Applies

P011B

Engine Coolant
Temperature/Intake
Air Temperature
Correlation



IAT sensor



ECT sensor



ECM

Comes on

DTC stored

-

P0120

Throttle/Pedal
Position
Sensor/Switch "A"
Circuit Malfunction



Throttle
Position (TP)
sensor (built
into throttle
body)



ECM

Comes on

DTC stored

Applies

P0121

Throttle/Pedal
Position
Sensor/Switch "A"
Circuit Range/
Performance
Problem



TP sensor (built
into throttle
body)

Comes on

DTC stored

Applies

P0122

Throttle/Pedal
Position
Sensor/Switch "A"
Circuit Low Input



TP sensor (built
into throttle
body)



Short in VTA1
circuit



Open in VC

Comes on

DTC stored

Applies

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra

circuit



ECM

P0123

Throttle/Pedal
Position
Sensor/Switch "A"
Circuit High Input

TP sensor (built into
throttle body)



Open in VTA1
circuit



Open in E2
circuit



Short between
VC and VTA1
circuits



ECM

Comes on

DTC stored

Applies

P0125

Insufficient Coolant
Temperature for
Closed Loop Fuel
Control



ECT sensor



Cooling system



Thermostat

Comes on

DTC stored

-

P0128

Coolant Thermostat
(Coolant
Temperature Below
Thermostat
Regulating
Temperature)



Thermostat



Cooling system



ECT sensor



ECM

Comes on

DTC stored

Applies

P0136

Oxygen Sensor
Circuit Malfunction
(Bank 1 Sensor 2)



Open or short in
HO2 sensor (for
bank 1, 2)
circuit



HO2 sensor (for
bank 1,2)



HO2 sensor
heater (for bank
1, 2)



Air-fuel Ratio
(A/F) sensor
(for bank 1,2)



Integration relay



Gas leakage
from exhaust
system

Comes on

DTC stored

-

P0137

Oxygen Sensor
Circuit Low Voltage
(Bank 1 Sensor 2)



Open in HO2
sensor (for bank
1,2) circuit



HO2 sensor (for
bank 1,2)

Comes on

DTC stored

Applies

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra



HO2 sensor
heater (for bank
1, 2)



Integration relay



Gas leakage
from exhaust
system

P0138

Oxygen Sensor
Circuit High
Voltage (Bank 1
Sensor 2)



Short in HO2
sensor (for bank
1,2) circuit



HO2 sensor (for
bank 1,2)



ECM internal
circuit
malfunction



Air-Fuel ratio
(A/F) sensor
(for bank 1,2)

Comes on

DTC stored

-

P0139

Oxygen Sensor
Circuit Slow
Response (Bank 1
Sensor 2)



Short in HO2
sensor (for Bank
1,2 Sensor 2)
circuit



HO2 sensor (for
Bank 1,2 Sensor
2)

Comes on

DTC stored

-

P0141

Oxygen Sensor
Heater Circuit
Malfunction (Bank 1
Sensor 2)



Open or short in
HO2 sensor
heater circuit



HO2 sensor
heater (for
sensor 2)



Integration relay
(EFI)



ECM

Comes on

DTC stored

Applies

P0156

Oxygen Sensor
Circuit Malfunction
(Bank 2 Sensor 2)



Open or short in
HO2 sensor (for
bank 1, 2)
circuit



HO2 sensor (for
bank 1,2)



HO2 sensor
heater (for bank
1, 2)

Comes on

DTC stored

-

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra